This community development project constructs a mutualistic symbiosis between a prospective astronomical observatory in Timor, Indonesia, and its surrounding community. The goal is thriving villages and a successful observatory. The project consists of: (1) Human Capacity Building with programs on empowering human resources (e.g. public officers training) and strengthening school (e.g. teachers training); and (2) Managing Sustainable Resources with programs on fulfilling primary needs (water and energy), by education of STEAM (Science Technology Engineering Arts Mathematics) knowledge and skill. The project is conducted by astronomers of Institut Teknologi Bandung and community development experts of Indonesian Institute for Energy Economics.